Groundwater faces extreme pressures around the world because of increase in population and climate change. The rainwater harvesting system play a huge role to enhance surface and groundwater resources in many regions. In this study, we examined the effect of common roofing materials concrete, aluminum and zinc roofs on the quality of harvested rainwater. Results from random sampling demonstrated that harvested rainwater from any of these roofing materials would require treatment if the household wanted to meet world health organization standards for portable water usage. Zinc roofs are commonly recommended for rainwater harvesting applications, and this study showed that rainwater harvested from zinc roofs tends to have lower concentrations of fecal indicator bacteria as compared to aluminum and concrete roofing materials. Although, harvesting water directly without any interference should be recommended and safer for domestic usage because it has less fecal indicator than aluminum, zinc and concrete roofing types.